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Conductive carbon paste, carbon counter electrode, battery and preparation method for perovskite solar cell

A technology for solar cells and conductive carbon paste, which is used in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, and semiconductor/solid-state device manufacture, etc. It can solve problems that hinder photoelectric conversion efficiency and corrode perovskite films. , can not be directly applied to the preparation of perovskite solar cells, etc., to achieve the effect of good conductivity, beneficial to collection, and low square resistance

Inactive Publication Date: 2017-06-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, (1) the conductive carbon paste used in industry is formulated from organic solvents such as xylene, cyclohexanone, and isophorone. Although such solvents have good screen printing performance, they will corrode solar energy. The perovskite film on the surface of the battery is not directly applicable to the preparation of the counter electrode of the perovskite solar cell
(2) In the existing conductive paste, photogenerated electron recombination phenomenon is relatively common, which hinders the improvement of photoelectric conversion efficiency

Method used

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  • Conductive carbon paste, carbon counter electrode, battery and preparation method for perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example is used to prepare conductive carbon paste.

[0032] S1: magnetic stirring at 50° C. for 3 hours, dissolving the binder in an organic solvent to form a transparent fluid solution; the binder is acrylic resin and ethyl cellulose; the solvent is toluene. The binder accounts for 10% by mass of the conductive carbon paste. The conductive filler accounts for 15% by mass of the conductive carbon paste; the inorganic additive accounts for 3.5% by mass of the conductive carbon paste.

[0033] S2: Perform ball milling on the mixed powder of conductive filler and inorganic additive to obtain a uniformly mixed powder; the inorganic additive is ZrO 2 powder, ZrO 2The particle size is 40nm, and the conductive filler includes nano-carbon black powder and flaky graphite powder, the mass ratio of which is 1:4, the particle size of the nano-carbon black powder is 40nm, and the particle size of the flaky graphite powder is 1 μm.

[0034] S3: Put the uniformly mixed powder...

Embodiment 2

[0036] This example is used to prepare conductive carbon paste.

[0037] S1: magnetic stirring at 60° C. for 4 hours, the binder is dissolved in an organic solvent to form a transparent fluid solution; the binder is acrylic resin and ethyl cellulose; the solvent is ethyl acetate. The binder accounts for 6% by mass of the conductive carbon paste, the conductive filler accounts for 20% by mass of the conductive carbon paste, and the inorganic additive accounts for 5% by mass of the conductive carbon paste.

[0038] S2: Perform ball milling on the mixed powder of conductive filler and inorganic additive to obtain a uniformly mixed powder; the inorganic additive is ZrO 2 , ZrO 2 The particle size of the powder is 50nm, the conductive filler includes nano-carbon black powder and flaky graphite powder, the mass ratio is 1:3, the particle size of the nano-carbon black powder is 30nm, and the particle size of the flaky graphite powder is 3 μm .

[0039] S3: Put the uniformly mixed ...

Embodiment 3

[0041] This example is used to prepare conductive carbon paste.

[0042] S1: magnetic stirring at 70° C. for 4 hours, the binder is dissolved in an organic solvent to form a transparent fluid solution; the binder is acrylic resin and ethyl cellulose; the solvent is ethyl acetate. The binder accounts for 15% by mass of the conductive carbon paste, the conductive filler accounts for 18% by mass of the conductive carbon paste, and the inorganic additive accounts for 3% by mass of the conductive carbon paste.

[0043] S2: Perform ball milling on the mixed powder of conductive filler and inorganic additive to obtain a uniformly mixed powder; the inorganic additive is NiO, the particle size of NiO powder is 30nm, and the conductive filler includes nano-carbon black powder and flaky graphite powder, and its mass ratio is 1:3, the particle size of the nano-carbon black powder is 50nm, and the particle size of the flaky graphite powder is 5 μm.

[0044] S3: Put the uniformly mixed pow...

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Abstract

The invention discloses perovskite solar cell conductive carbon paste which comprises organic solvents, binders and conductive filling materials. The conductive carbon paste further comprises inorganic additives. The inorganic additives are ZrO2 or NiO powder. By mass percent, the conductive carbon paste comprises 6%-15% of binders, 14%-20% of conductive filling materials and 3%-5% of inorganic additives. The invention further discloses a carbon counter electrode for a perovskite solar cell. The carbon counter electrode is prepared and acquired by adopting the above-mentioned conductive carbon paste in a screen printing means. The invention further discloses the perovskite solar cell comprising the above-mentioned carbon counter electrode. A method of preparing the conductive carbon paste is further disclosed. The conductive carbon paste which does not make a perovskite film corroded further increases the photoelectric conversion efficiency.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, and more specifically relates to a conductive carbon paste for a perovskite solar cell and a preparation method thereof. The conductive carbon paste can be used to prepare a counter electrode of a perovskite solar cell. Background technique [0002] With the continuous burning of coal, oil, and natural gas, the energy crisis has gradually intensified, and the degree of environmental pollution has gradually deepened. People urgently need to find a clean and non-polluting alternative energy source. Among them, solar energy is inexhaustible and has always been one of the ideal alternative energy sources for people. Perovskite solar cells are new stars in the photovoltaic industry developed in the last five years, and their photoelectric conversion efficiency has increased from the initial 3.8% to 20.4%. Such high photoelectric conversion efficiency makes it extremely potential to replace high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/24H01L51/44H01B13/00
CPCY02E10/549
Inventor 廖广兰刘智勇史铁林谭先华孙博吴悠妮
Owner HUAZHONG UNIV OF SCI & TECH
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